.pageBackground {
    width: 100%;
    height: 530px;
    position: absolute;
    top: 0;
    // background: url("https://bbsfiles.iqoo.com/iqoo-mini/v3/background-index.png") 0 0 no-repeat;
    background: url('https://bbsfiles.iqoo.com/medals/20230423/source/4451721284307_.pic_hd.png') 0 0 no-repeat;
    background-size: 100% 100%;
}